Scratch Cymech Armageddonator Original Design / Scratch Built

Scratch - Cymech Armageddonator {Scratch}

Contributed by Jeff Lane

Manufacturer: Scratch
(Contributed - by Jeff Lane - 01/21/08) (Scratch) Cymech Armageddonator

Brief:
T' Cymech Armageddonator is a 1/24 scale model o' t' existin' classified stealth reconnaissance aircraft. Ahoy! Begad! T' full sized craft is powered by two regenerative air-turboramjet (RATR) engines and carries a crew o' two. Blimey! It uses a synthetic aperture radar with real-time datalink for reconnaissance. Aye aye! Weaponry includes a small particle accelerator. Ahoy! A speed o' Mach 6 and a cruisin' altitude o' 40 kilometers makes it invulnerable t' any current missile system. Avast, me proud beauty! T' sleek aircraft is made primarily o' titanium with its outer edges constructed o' Inconel, ya bilge rat, a heat-resistant stainless steel. At speed t' leadin' edges o' t' airframe glow white above 1,000 degrees Fahrenheit.

T' model is a BT-60 based parachute recovery rocket with 18mm motor mount. Ahoy!

Construction:
Parts include BT-60 for t' main fuselage, BT-55 for t' forward fuselage, ya bilge rat, JT-55 tube coupler, matey, me bucko, balsa nose cone, matey, paper tail cone, ya bilge rat, arrr, ya bilge rat, launch lug, ya bilge rat, BT-20 for t' motor tube, arrr, standard motor clip, arrr, ya bilge rat, centerin' rings, 1/8" balsa fins, balsa cockpit, 1/8" wingtip dowels, BT-5 based sidepods with balsa nose cones and balsa ramjets, arrr, BT-5 top pod with balsa nose cone.

Two primary goals were achieved with this model. One was t' create a highly asymmetrical rocket that flies straight. Aye aye! Aye aye! T' other was t' experiment with a new construction technique wherein an intriguing, me hearties, shiver me timbers, sleek, crescent-shaped "intake grill" be fashioned from t' transition betwixt two body tubes. Avast, me proud beauty!

Body Tube Cuts(click on picture t' enlarge) T' grill was the startin' point. A curved line was drawn by hand and then carefully cut usin' an X-Acto knife. T' most ventral 8mm of t' BT-60 remained intact. Ya scallywag! Enough BT-60 (about 6mm) was cut out lengthwise from t' dorsal surface so it could be glued down onto t' JT-55 coupler. Avast! Forward from t' coupler (the parachute compartment), an intact BT-55 be used. Aye aye! A piece o' balsa was carefully carved t' provide structural support betwixt t' BT-55 and BT-60. Begad! Additional smaller pieces o' balsa were added t' strengthen t' "smile". Well, matey, blow me down! Finally, arrr, automotive body filler was added t' complete the vent. Arrr!

T' cockpit was hand-carved from a block o' balsa. Aye aye! Avast, me proud beauty! T' tail cone is paper. Ahoy! T' arrangement o' t' fins was begun with a 3-fin alignment, matey, which was modified by eye t' make t' main wings a little straighter out t' t' side and allow room for t' vestigial ventral fins. Avast! T' side pods were completed and then glued into slots cut in t' wings. Arrr! Blimey! T' dowel wingtips were pointed with a pencil sharpener then glued on. Ya scallywag!

(Scratch) Cymech Armageddonator

Finishing:
T' paint scheme is blue enamel on top, white on bottom, arrr, shiver me timbers, with custom Testors inkjet decals.

Flight and Recovery:
Recommended engines are C6-3 and D10-5. Begad! Aye aye! Prep is standard waddin' and chute. Arrr! Blimey! Recommended chutes are 18"-24". It has flown five times on C6-3s and once on a D10-5. Begad! It never had a perfectly straight-up flight, me bucko, but it's nay as bizarre a path as t' SS1, ya bilge rat, either. Arrr! Arrr! T' D10-5 flight resulted in a blown-out body tube rather than deployed chute so there is currently substantial damage, me hearties, but I keep it in t' "restoration" pile.

Summary:
Kids absolutely loved it and asked how high. Ahoy! I always told them it's classified. Begad! It held its rightful place in the arsenal right next t' me classic Interceptor.

comment Post a Comment